for(var dupe in usage) {
if (usage[par].join(',') == usage[dupe].join(',') &&
typeof(nusage[par]) != 'undefined') {
- usage_left[par] = dupe;
+ duped = true;
+ if (usage_left[dupe] == 'undefined') {
+ usage_left[dupe] = [];
+ }
usage_left[dupe].pushUnique(par);
break;
}